103891239 has 12 divisors (see below), whose sum is σ = 150159672. Its totient is φ = 69217200.

The previous prime is 103891237. The next prime is 103891243. The reversal of 103891239 is 932198301.

It is not a de Polignac number, because 103891239 - 2¹ = 103891237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103891231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18604 + ... + 23534.

It is an arithmetic number, because the mean of its divisors is an integer number (12513306).

Almost surely, 2^103891239 is an apocalyptic number.

103891239 is a deficient number, since it is larger than the sum of its proper divisors (46268433).

103891239 is a wasteful number, since it uses less digits than its factorization.

103891239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7275 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 103891239 is about 10192.7051855727. The cubic root of 103891239 is about 470.1029486270.

It can be divided in two parts, 10389 and 1239, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 103891239 in words is "one hundred three million, eight hundred ninety-one thousand, two hundred thirty-nine".